Patents by Inventor Kwan Wook Song

Kwan Wook Song has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • ELECTROLYTE FOR LITHIUM SECONDARY BATTERY, AND LITHIUM SECONDARY BATTERY INCLUDING SAME
    Publication number: 20220294014
    Abstract: The present invention relates to an electrolyte for a lithium secondary battery and a lithium secondary battery including the same. The electrolyte for a lithium secondary battery and the lithium secondary battery including the same according to the present invention exhibit flame retardancy, and thus have the advantage of being able to provide excellent reliability. The lithium secondary battery exhibits high output performance and has excellent cycle life characteristics, high-temperature stability, and high-temperature voltage preservation stability, and thus has the advantage of high battery reliability.
    Type: Application
    Filed: September 3, 2020
    Publication date: September 15, 2022
    Inventors: Kwan-Wook SONG, Kyoung-Moon JUNG, Sang-Jin LEE
  • Hard coating film and image display device using the same
    Patent number: 10501638
    Abstract: The present invention relates to a hard coating film, and more particularly, to a hard coating film that includes a high elongation oligomer having an elastic modulus and elongation at break in a specific range on a transparent substrate, and thus can exhibit excellent impact resistance and bending resistance and can minimize the occurrence of a curl caused by cure shrinkage of a hard coating film, and an image display device using the same.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: December 10, 2019
    Assignee: Dongwoo Fine-Chem Co., Ltd.
    Inventors: Geo San Lim, Dong Hwi Kim, Kwan Wook Song
  • SENSITIVE LUMINESCENT COMPOSITION
    Publication number: 20180208780
    Abstract: The present invention relates to a sensitive luminescent composition, which includes a sensitive luminescent material having a maximum absorption wavelength of 450 to 700 nm to improve the beam visibility of a laser pointer.
    Type: Application
    Filed: January 26, 2018
    Publication date: July 26, 2018
    Applicant: DONGWOO FINE-CHEM CO., LTD.
    Inventors: Geo San LIM, Kwan Wook SONG
  • HARD COATING FILM AND IMAGE DISPLAY DEVICE USING THE SAME
    Publication number: 20170253746
    Abstract: The present invention relates to a hard coating film, and more particularly, to a hard coating film that includes a high elongation oligomer having an elastic modulus and elongation at break in a specific range on a transparent substrate, and thus can exhibit excellent impact resistance and bending resistance and can minimize the occurrence of a curl caused by cure shrinkage of a hard coating film, and an image display device using the same.
    Type: Application
    Filed: March 3, 2017
    Publication date: September 7, 2017
    Inventors: Geo San Lim, Dong Hwi Kim, Kwan Wook Song